NEW YORK (Reuters) - A former sports marketing executive who was arrested last year in a U.S. corruption probe involving soccer's global governing body FIFA is scheduled to plead guilty on Thursday, according to a court filing. The expected plea by Aaron Davidson, who was the head of Traffic Group's U.S. unit in Miami, was disclosed in a scheduling order filed in federal court in Brooklyn on Tuesday. (Reporting by Nate Raymond in New York; Editing by Bernard Orr) More...